Add pointer from fileSystemMount to FileSystemConnector, and use for Debug.

fuse/fsconnector.go

@@ -250,6 +250,7 @@ func (me *FileSystemConnector) findInode(fullPath string) *Inode {
 
 func (me *FileSystemConnector) MountRoot(nodeFs NodeFileSystem, opts *FileSystemOptions) {
 	me.rootNode.mountFs(nodeFs, opts)
+	me.rootNode.mount.connector = me
 	nodeFs.OnMount(me)
 	me.verify()
 }
@@ -284,6 +285,7 @@ func (me *FileSystemConnector) Mount(parent *Inode, name string, nodeFs NodeFile
 	}
 
 	node.mountFs(nodeFs, opts)
+	node.mount.connector = me
 	parent.addChild(name, node)
 
 	if parent.mounts == nil {

fuse/fsmount.go

@@ -39,6 +39,8 @@ type fileSystemMount struct {
 	openFiles HandleMap
 
 	Debug bool
+
+	connector *FileSystemConnector
 }
 
 // Must called with lock for parent held.
@@ -81,8 +83,8 @@ func (me *fileSystemMount) fileInfoToAttr(fi *os.FileInfo, nodeId uint64) (out *
 
 func (me *fileSystemMount) getOpenedFile(h uint64) *openedFile {
 	b := (*openedFile)(unsafe.Pointer(me.openFiles.Decode(h)))
-	if me.Debug {
-		log.Printf("File %d = %s", h, b.WithFlags.Description)
+	if me.connector.Debug && b.WithFlags.Description != "" {
+		log.Printf("File %d = %q", h, b.WithFlags.Description)
 	}
 	return b
 }